Installation, Operation & Maintenance Manual
IM-225
12
2. Connect the motor to the appropriate speed control option. The motor can accommodate 1 of 2 methods for speed control.
The first method is a potentiometer (also known as a remote speed control or motor mounted dial). This is an analog dial that
controls the speed of the motor by sending a variable 0-10V DC signal to the motor. CW rotation of the potentiometer increases
the speed and CCW rotation decreases the speed (all the way CCW turns the motor off). Note that the motor will run between
2-10V and will shut off from 0-1.9V. See Figure 6 below for details on wiring a potentiometer if required.
Connect the Speed Control Potentiometer to the motor control
as follows:
a. Connect one end of Potentiometer to P10-1 (12V DC).
b. Connect center (wiper) of Potentiometer to P10-2
(Analog Input)
c. Connect other end of Potentiometer to P10-3 (DGND)
Use only Copper Wire for all wiring.
The second speed control method is to send the motor a 0-10V
DC control signal. From the factory, a 2-wire harness is provided
for field connections. Note that the motor does not require a 24V
power source to operate in this mode. See Figure 7.
Connect the Control Signal Harness to the motor control as
follows:
a. Connect a positive voltage source to pin P10-2 (Analog Input)
b. Connect source common to P10-3 (DGND)
Use only Copper Wire for all wiring.
It is the responsibility of the installer/controls engineer to ensure that any field
supplied controls are compatible and functional with this motor technology. Aerovent
is not responsible for field supplied or customer designed fan or motor controls.
3. Verify rotation of motor is correct by energizing the motor and checking that the
rotation matches the fan rotation label. This can also be done before any speed
controls are wired in by placing a jumper wire between terminals Pin 1 and Pin 2.
This will send 10 volts into the motor and cause it to run at full speed. To change
the rotation of the motor, swap the T1 (Black) and T2 (Blue) leads (as shown on
the right). Note that the motor and fan warranty are void if the motor is rotating
in the incorrect direction. Also verify that the motor speed control is functioning
properly.
Figure 6. Motor Speed Controlled by a Remote Speed
Control Dial (Potentiometer)
P10--1
Remote Speed
Control Dial
12VDC
AnalogIn
DGND
P10
Pin1= 12VDC
Pin2= AnalogIn
Pin3= DGND
Tighten to
5 --7 lb--in
L2 L1 N
Figure 7. Motor Speed Controlled by 0-10V DC
Control Signal
P10--1
P10
Pin2= AnalogIn
Pin3= DGND
Analog Input
0--10VDC
DGND
Tighten to
5 --7 lb--in
L2 L1 N
Speed Control Options: TEFC Motors (cont.)
Description
Wire Color
0-10V DC
(Analog Input)
Red
Ground
(DGND)
White
